At What Point Does Gambling Become a Gambling Disorder

At what point does gambling become a gambling disorder?

A) when the gambler also abuses substances such as drugs or alcohol while gambling
B) when gambling behavior takes place in the context of high extraversion and high agreeableness
C) when any two of six formal criteria for the disorder are met
D) when gambling leads to major disruptions that threaten a person's day-to-day life